package map;

import java.util.HashMap;
import java.util.Map;

public class Test {
    public static void main(String[] args) {
        String line = "我是马楼， 哈哈哈哈哈！";
        Map<Character, Integer> map = new HashMap<>();
        for (int i = 0; i < line.length(); ++i) {
            if (!map.containsKey(line.charAt(i))) {
                map.put(line.charAt(i), 1);
            } else {
                map.put(line.charAt(i), map.get(line.charAt(i)) + 1);
            }
        }
        System.out.println(map);
        map.forEach((k,v)-> System.out.println(k + ":" + v));
    }
}
